Tap ( Concept )
http://purl.org/linguistics/gold/Tap

A Tap 'is a sound in which a brief contact between the articulators is made by moving the active articulator directly towards the roof of the mouth.' A tap is 'usually coronal. ... Taps are most typically made by a direct movement of the tongue tip to a contact location in the dental or alveolar region.' [Ladefoged 1996: 231]